By a News Reporter-Staff News Editor at Health & Medicine Week -- Current study results on Gram-Positive Bacteria have been published. According to news reporting originating in Araraquara, Brazil, by NewsRx journalists, research stated, "Nontuberculous mycobacteria are resistant to conventional water treatment; indeed, they have been recovered from a wide variety of environmental sources. Here, we applied the photoelectrocatalytic technique using a Ti/TiO2-Ag photoanode to inactivate mycobacteria."
The news reporters obtained a quote from the research from Sao Paulo State University, "For a mycobacteria population of 5 x 108 CFU mL(-1), we achieved 99.9 and 99.8% inactivation of Mycobacterium kansasii and Mycobacterium avium with rate constant of 6.2 x 10(-3) and 4.2 x 10(-3) min(-1), respectively, after 240 min. We compared the proposed method with the photolytic and photocatalytic methods. Using a mycobacteria population of 7.5 x 10(4) CFU mL(-1), the proposed Ti/TiO2-Ag photoanode elicited total mycobacteria inactivation within 3 min of treatment; the presence of Ag nanoparticles in the electrode provided 1.5 larger degradation rate constant as compared with the Ti/TiO2 anode (1.75 x 10(-2) for M. kansassi and 1.98 x 10(-2) for M. avium)."
According to the news reporters, the research concluded: "We monitored the degradation of the metabolites released during cellular lysis by TOG removal, sugar release, chromatography, and mass spectrometry measurements; photoelectrocatalysis and Ti/TiO2-Ag photoanodes furnished the best results."
For more information on this research see: A photoelectrocatalytic process that disinfects water contaminated with Mycobacterium kansasii and Mycobacterium avium. Water Research, 2013;47(17):6596-6605. Water Research can be contacted at: Pergamon-Elsevier Science Ltd, The Boulevard, Langford Lane, Kidlington, Oxford OX5 1GB, England. (Elsevier - www.elsevier.com; Water Research - www.elsevier.com/wps/product/cws_home/309)
Our news correspondents report that additional information may be obtained by contacting M.F. Brugnera, UNESP, Fac Pharmaceut Sci Araraquara, Dept. of Biol Sci, BR-14801902 Araraquara, SP, Brazil. Additional authors for this research include M. Miyata, G.J. Zocolo, C.Q.F. Leite and M.V.B. Zanoni (see also Gram-Positive Bacteria).
Keywords for this news article include: Brazil, Treatment, Araraquara, South America, Actinobacteria, Actinomycetales, Mycobacteriaceae, Gram-Positive Rods, Mycobacterium avium, Atypical Mycobacteria, Gram-Positive Bacteria, Mycobacterium kansasii, Gram-Positive Asporogenous Rods
Our reports deliver fact-based news of research and discoveries from around the world. Copyright 2014, NewsRx LLC